JP2005155834A - Power transmitting device - Google Patents

Power transmitting device Download PDF

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JP2005155834A
JP2005155834A JP2003397511A JP2003397511A JP2005155834A JP 2005155834 A JP2005155834 A JP 2005155834A JP 2003397511 A JP2003397511 A JP 2003397511A JP 2003397511 A JP2003397511 A JP 2003397511A JP 2005155834 A JP2005155834 A JP 2005155834A
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cage
retainer
switch
inner ring
power transmission
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Japanese (ja)
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Daisuke Ando
大介 安藤
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NTN Corp
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NTN Corp
NTN Toyo Bearing Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To inhibit the generation of engagement shock in switching the rotating direction in a power transmitting device applying a two-way clamp. <P>SOLUTION: Pole parts 9 of a first cage A1 and a second cage A2 are mounted between an outer ring 1 having a cylindrical inner face 6 and an inner ring 3 having a cam face 7 on its outer periphery, guide holes 18a, 18b inclined in the directions opposite to each other are formed on the pole parts 9 of the cages A1, A2, a switch hole 19 long in the circumferential direction is formed on a cylindrical part 5 of the inner ring 3, and switch pins 20 are inserted into intersecting parts of the switch holes 19 and the guide holes 18a, 18b, and fixed to pin holders 21. In this power transmitting device, the first cage A1 and the second cage A2 are rotated relatively in the opposite directions by being pressed by elastic members 12, a pair of rollers 11a, 11b are held on positions where very small clearances are formed with a cylindrical inner face 6 by the contact of end faces of the guide holes 18a, 18b with the switch pins 20, and the rollers 11a, 11b are engaged by slight rotation of the inner ring 3, whereby the generation of engagement shock can be inhibited. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

この発明は、２方向クラッチを用いて動力の伝達と遮断の切換えを行なうようにした動力伝達装置に関するものである。   The present invention relates to a power transmission device that uses a two-way clutch to switch between transmission and cutoff of power.

２方向クラッチとして、図１８に示したものが従来から知られている。この２方向クラッチは、出力側部材としての外輪３０の内側に入力側部材としての内輪３１を設け、その内輪３１の外周には外輪３０の円筒形内面３２との間でくさび形空間を形成するカム面３３を設け、このカム面３３と円筒形内面３２間にローラから成る係合子３４を組込み、その係合子３４を外輪３０と内輪３１間に組込まれた保持器３５で保持し、前記内輪３１に対する保持器３５の相対回転により、図１９に示すように、係合子３４を円筒形内面３２およびカム面３３に係合させて内輪３１の回転を係合子３４を介して外輪３０に伝えるようにしている。   A two-way clutch shown in FIG. 18 is conventionally known. In this two-way clutch, an inner ring 31 as an input side member is provided inside an outer ring 30 as an output side member, and a wedge-shaped space is formed between the outer circumference of the inner ring 31 and the cylindrical inner surface 32 of the outer ring 30. A cam surface 33 is provided, and an engaging member 34 made of a roller is assembled between the cam surface 33 and the cylindrical inner surface 32. The engaging member 34 is held by a retainer 35 assembled between the outer ring 30 and the inner ring 31, and the inner ring 19, the engagement element 34 is engaged with the cylindrical inner surface 32 and the cam surface 33, and the rotation of the inner ring 31 is transmitted to the outer ring 30 via the engagement element 34, as shown in FIG. I have to.

上記のような２方向クラッチを用いる動力伝達装置においては、例えば特許文献１に記載されているように、内輪３１と保持器３５の相互間にスイッチばねを組込んで係合子３４が円筒形内面３２およびカム面３３に対して係合解除される中立位置に保持器３５を弾性保持し、その保持器３５に回転抵抗を付与する回転抵抗付与手段を設け、上記保持器３５に負荷される回転抵抗により内輪３１に対し保持器３５に回転遅れを生じさせて係合子３４を円筒形内面３２およびカム面３３に係合させるようにしている。
特開平１０−２１１８２８号公報 In the power transmission device using the two-way clutch as described above, for example, as described in Patent Document 1, a switch spring is assembled between the inner ring 31 and the retainer 35 so that the engagement element 34 has a cylindrical inner surface. The retainer 35 is elastically held at a neutral position where the engagement with the cam surface 33 and the cam surface 33 is released, and a rotation resistance applying means for applying a rotation resistance to the retainer 35 is provided. Due to the resistance, the retainer 35 is delayed in rotation with respect to the inner ring 31 so that the engagement element 34 is engaged with the cylindrical inner surface 32 and the cam surface 33.
Japanese Patent Laid-Open No. 10-211828

ところで、図１８に示す２方向クラッチを用いた動力伝達装置において、内輪３１を例えば図１９に示す左回転する状態から右回転する方向に回転方向を切換えると、係合子３４は同図の実線で示す位置から中立位置に戻されて鎖線で示す位置までスイッチし、そのスイッチ角θが大きいために係合ショックが発生し、２方向クラッチが破損する可能性がある。   By the way, in the power transmission device using the two-way clutch shown in FIG. 18, when the rotation direction of the inner ring 31 is switched from the left rotation state shown in FIG. 19 to the right rotation direction, the engagement element 34 is shown by the solid line in FIG. The switch is returned from the position shown to the neutral position and switched to the position shown by the chain line, and since the switch angle θ is large, an engagement shock may occur, and the two-way clutch may be damaged.

ここで、***国特許出願公開第４１２９６１７号明細書には、外部リングの内周に円筒形のガイド面を形成し、内部要素には上記ガイド面との間でくさび形空間を形成するクランプ軌道を設け、そのクランプ軌道とガイド面間に一対のローラと、そのローラ間に圧縮スプリングとを組込んで一対のローラのそれぞれをガイド面とクランプ軌道に接触をさせるようにしたカップリングが記載されている。   Here, West German Patent Application No. 4129617 discloses a clamp track in which a cylindrical guide surface is formed on the inner periphery of an outer ring and a wedge-shaped space is formed between the inner element and the guide surface. There is described a coupling in which a pair of rollers is installed between the clamp track and the guide surface, and a compression spring is incorporated between the rollers so that each of the pair of rollers comes into contact with the guide surface and the clamp track. ing.

上記カップリングにおいては、一対のローラがクランプ軌道とガイド面に常に接触するスタンバイ状態にあるため、内部要素の回転方向が切り換わると、一対のローラのうちの一方がクランプ軌道とガイド面に直ちに係合し、係合ショックの発生がないという特徴を有している。   In the above coupling, since the pair of rollers is in a standby state in which the roller always contacts the clamp track and the guide surface, when the rotation direction of the internal element is switched, one of the pair of rollers immediately contacts the clamp track and the guide surface. It has the characteristic that it engages and there is no generation | occurrence | production of an engagement shock.

しかしながら、一対のローラが常にスタンバイ状態にあるため、内部要素を空転させることができないという不都合がある。   However, since the pair of rollers are always in a standby state, there is a disadvantage that the internal elements cannot be idled.

この発明の課題は、動力の伝達と遮断とを行なうことができると共に、回転方向の切換え時に２方向クラッチに係合ショックが発生するのを抑制することができるようにした動力伝達装置を提供することである。   SUMMARY OF THE INVENTION An object of the present invention is to provide a power transmission device that can transmit and shut off power and suppress the occurrence of an engagement shock in a two-way clutch when the rotational direction is switched. That is.

上記の課題を解決するために、この発明においては円筒形内面を有する外輪と、前記円筒形内面との間でくさび形空間を形成するカム面が外周に設けられた内輪と、環状部の片面に複数の柱部が周方向に等間隔に設けられ、その柱部が前記円筒形内面とカム面間に配置された第１保持器と、環状部の片面に複数の柱部が周方向に等間隔に設けられ、各柱部が第１保持器の柱部間に配置されて第１保持器の柱部との間で前記カム面と対応する位置にポケットを形成する第２保持器と、前記ポケット内に組込まれた一対のローラと、その一対のローラを相反する方向に押圧する弾性部材と、前記第１保持器と第２保持器とを軸方向に移動させる移動手段とを有し、前記第１保持器および第２保持器の柱部それぞれに周方向に傾斜すると共に、相反する方向に傾斜するガイド孔を形成し、前記内輪の端面に設けられた円筒部には各ガイド孔と対応する位置に周方向に長いスイッチ孔を形成し、そのスイッチ孔と各ガイド孔の交差部に挿入されたスイッチピンを前記円筒部内に組込まれたピンホルダに固定し、前記ガイド孔の一方の端面が前記スイッチピンに当接してポケットの周方向の幅寸法が最大とされた状態で一対のローラと円筒形内面間に微小間隙が形成されるようにした構成を採用したのである。   In order to solve the above problems, in the present invention, an outer ring having a cylindrical inner surface, an inner ring having a cam surface forming a wedge-shaped space between the cylindrical inner surface, and one surface of an annular portion A plurality of column portions are provided at equal intervals in the circumferential direction, and the column portions are disposed between the cylindrical inner surface and the cam surface, and a plurality of column portions are disposed on one side of the annular portion in the circumferential direction. A second retainer that is provided at equal intervals and in which each pillar is disposed between the pillars of the first retainer and forms a pocket at a position corresponding to the cam surface between the pillars of the first retainer; A pair of rollers incorporated in the pocket, an elastic member that presses the pair of rollers in opposite directions, and a moving means for moving the first retainer and the second retainer in the axial direction. And inclining circumferentially in each of the pillar portions of the first and second cages, The cylindrical portion provided on the end surface of the inner ring is formed with a long switch hole in the circumferential direction at a position corresponding to each guide hole, and the switch hole intersects with each guide hole. The switch pin inserted into the cylindrical portion is fixed to a pin holder incorporated in the cylindrical portion, and one end face of the guide hole is in contact with the switch pin, and the pair of the pockets in the state where the circumferential width dimension of the pocket is maximized. A configuration in which a minute gap is formed between the roller and the cylindrical inner surface is adopted.

ここで、前記移動手段として、保持器の環状板と軸方向で対向するロータと、そのロータと軸方向で対向し、通電によりロータに各保持器の環状板を吸着させる電磁石とから成るものを採用することができる。   Here, the moving means includes a rotor that faces the annular plate of the cage in the axial direction, and an electromagnet that faces the rotor in the axial direction and attracts the annular plate of each cage to the rotor when energized. Can be adopted.

この発明に係る動力伝達装置において、第１保持器および第２保持器のそれぞれに形成したガイド孔は、各保持器の柱部が外輪と内輪間から抜け出る方向への移動時にスイッチピンとの接触によってポケットの周方向の幅寸法が小さくなる方向に第１保持器と第２保持器とが相対回転するよう傾斜させたものであってもよい。   In the power transmission device according to the present invention, the guide holes formed in each of the first retainer and the second retainer are brought into contact with the switch pin when the column portion of each retainer moves in a direction to escape from between the outer ring and the inner ring. The first holder and the second holder may be inclined so as to relatively rotate in a direction in which the circumferential width dimension of the pocket becomes smaller.

また、上記ガイド孔は、各保持器の柱部が外輪と内輪間から抜け出る方向への移動時にスイッチピンとの接触によってポケットの幅寸法が大きくなる方向に第１保持器と第２保持器とが相対回転するよう傾斜させたものであってもよい。この場合、前記保持器を弾性部材によって柱部が外輪と内輪間に押し込まれる方向に付勢する。   In addition, the guide hole is formed so that the first cage and the second cage are arranged in a direction in which the width of the pocket is increased due to contact with the switch pin when the column portion of each cage is moved in the direction of coming out from between the outer ring and the inner ring. It may be inclined so as to rotate relatively. In this case, the retainer is urged by the elastic member in a direction in which the column portion is pushed between the outer ring and the inner ring.

この発明に係る動力伝達装置においては、第１保持器と第２保持器の相対回転によりポケットの周方向の幅寸法を拡げ、スイッチピンとスイッチ孔の両端面間に形成される回転方向すきまの範囲内で第１保持器および第２保持器に対し内輪を相対回転させて一方のローラを円筒形内面およびカム面に係合させ、その一方のローラを介して内輪の回転を外輪に伝達する。   In the power transmission device according to the present invention, the width of the pocket in the circumferential direction is expanded by the relative rotation of the first cage and the second cage, and the rotational clearance formed between both end faces of the switch pin and the switch hole. The inner ring is rotated relative to the first cage and the second cage to engage one roller with the cylindrical inner surface and the cam surface, and the rotation of the inner ring is transmitted to the outer ring through the one roller.

ローラの係合解除に際しては、第１保持器および第２保持器に対して内輪を相対回転させてスイッチピンをスイッチ孔の両端面間の中央部に位置させる。このとき、内輪の円筒部とピンホルダの相互間にスイッチピンがスイッチ孔の両端面間の中央部に配置される状態に保持するスイッチばねを設けておくことにより、そのスイッチばねの弾性によって係合状態のローラを円筒形内面およびカム面から係合解除される位置に戻すことができる。   When releasing the engagement of the roller, the inner ring is relatively rotated with respect to the first holder and the second holder, and the switch pin is positioned at the center between both end faces of the switch hole. At this time, by providing a switch spring between the cylindrical portion of the inner ring and the pin holder so that the switch pin is disposed in the center between the both end faces of the switch hole, the switch spring is engaged by the elasticity of the switch spring. The roller in the state can be returned to the position where it is disengaged from the cylindrical inner surface and the cam surface.

この発明によれば、移動手段によって第１保持器および第２保持器を軸方向に移動させることにより、スイッチピンに対する傾斜状ガイド孔の接触により第１保持器と第２保持器が相対的に逆方向に回動して、第１保持器の柱部と第２保持器の柱部で形成されるポケットの周方向の幅寸法が変化する。そのポケットの幅寸法が小さくなる方向に第１保持器と第２保持器とを相対回転させることにより、一対のローラは円筒形内面およびカム面に対して係合解除される中立位置に保持されるため、内輪から外輪への回転トルクの伝達を遮断することができる。   According to the present invention, the first retainer and the second retainer are relatively moved by the contact of the inclined guide hole with the switch pin by moving the first retainer and the second retainer in the axial direction by the moving means. By rotating in the reverse direction, the circumferential width dimension of the pocket formed by the column portion of the first cage and the column portion of the second cage changes. By rotating the first cage and the second cage relative to each other in the direction in which the pocket width dimension decreases, the pair of rollers are held in a neutral position where they are disengaged from the cylindrical inner surface and the cam surface. Therefore, transmission of rotational torque from the inner ring to the outer ring can be blocked.

また、ポケットの幅寸法が大きくなる方向に第１保持器と第２保持器とを相対回転させることにより、弾性部材の押圧により一対のローラが互に離反する方向に移動して、各ローラと円筒形内面との間に微小な間隙が形成される状態に保持される。そこで、内輪を回転させると、上記微小間隙に相当する角度分だけ内輪が僅かに回転したときに一対のローラのうちの回転方向後行側のローラが円筒形内面およびカム面に係合し、そのローラを介して内輪の回転が外輪に伝達される。   Further, by rotating the first cage and the second cage relative to each other in the direction of increasing the width of the pocket, the pair of rollers move away from each other by the pressing of the elastic member, It is held in a state where a minute gap is formed between the cylindrical inner surface. Therefore, when the inner ring is rotated, when the inner ring is slightly rotated by an angle corresponding to the minute gap, the roller on the downstream side in the rotational direction of the pair of rollers is engaged with the cylindrical inner surface and the cam surface, The rotation of the inner ring is transmitted to the outer ring through the roller.

内輪の回転方向を切り換えると、切り換え前に係合状態にあった一方のローラが係合解除され、上記微小間隙の２倍の角度分に相当する角度だけ内輪が回転することによって他方のローラが円筒形内面およびカム面に係合し、その他方のローラを介して内輪の回転を外輪に伝達することができる。   When the direction of rotation of the inner ring is switched, one of the rollers that was in the engaged state before the switching is disengaged, and the other roller is rotated by rotating the inner ring by an angle corresponding to twice the angle of the minute gap. Engaging with the cylindrical inner surface and the cam surface, the rotation of the inner ring can be transmitted to the outer ring via the other roller.

このように、内輪の回転方向の切換え時、内輪が微小間隙の２倍の角度分に相当する角度だけ回転することによりローラが円筒形内面およびカム面に係合するため、回転方向切り換え時に係合ショックが発生するのを抑制することができる。   As described above, when the rotation direction of the inner ring is switched, the roller is engaged with the cylindrical inner surface and the cam surface by rotating the inner ring by an angle corresponding to twice the angle of the minute gap. Generation of combined shock can be suppressed.

以下、この発明の実施形態を図１乃至図１７に基づいて説明する。図１乃至図１０はこの発明に係る動力伝達装置の第１の実施形態を示す。図１に示すように、外輪１は閉塞端を有し、その閉塞端に出力軸２が設けられている。   Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 10 show a first embodiment of a power transmission device according to the present invention. As shown in FIG. 1, the outer ring 1 has a closed end, and an output shaft 2 is provided at the closed end.

外輪１の内側に設けられた内輪３には前記出力軸２と同軸上に入力軸４が設けられている。また、内輪３の一方の端部には円筒部５が設けられている。   An inner ring 3 provided inside the outer ring 1 is provided with an input shaft 4 coaxially with the output shaft 2. A cylindrical portion 5 is provided at one end of the inner ring 3.

図２に示すように、外輪１には円筒形内面６が形成され、一方、内輪３の外周には上記円筒形内面６との間でくさび形空間を形成する複数のカム面７が周方向に等間隔に設けられている。   As shown in FIG. 2, a cylindrical inner surface 6 is formed on the outer ring 1, while a plurality of cam surfaces 7 forming a wedge-shaped space with the cylindrical inner surface 6 are arranged on the outer periphery of the inner ring 3 in the circumferential direction. Are provided at equal intervals.

図１乃至図３に示すように、内輪３の外側には第１保持器Ａ1 と第２保持器Ａ2 が設けられている。図５に示すように、第１保持器Ａ1 および第２保持器Ａ2 のそれぞれは、環状部８の片面外周部に複数の柱部９を周方向に等間隔に形成した構成とされ、第１保持器Ａ1 における柱部９の外接円径と第２保持器Ａ2 における柱部９の外接円径は同一径とされている。 As shown in FIGS. 1 to 3, a first cage A 1 and a second cage A 2 are provided outside the inner ring 3. As shown in FIG. 5, each of the first cage A 1 and the second cage A 2 has a configuration in which a plurality of column portions 9 are formed at equal intervals in the circumferential direction on one side outer circumferential portion of the annular portion 8. The circumscribed circle diameter of the column portion 9 in the first cage A 1 and the circumscribed circle diameter of the column portion 9 in the second cage A 2 are the same.

図２乃至図４に示すように、第１保持器Ａ1 と第２保持器Ａ2 は、第１保持器Ａ1 の柱部９間に第２保持器Ａ2 の柱部９が配置される円筒形の組合わせとされる。また、第１保持器Ａ1 と第２保持器Ａ2 は、外輪１と内輪３間に柱部９が配置される組込みとされている。 As shown in FIGS. 2 to 4, in the first cage A 1 and the second cage A 2 , the column portion 9 of the second cage A 2 is disposed between the column portions 9 of the first cage A 1. This is a cylindrical combination. Further, the first retainer A 1 and the second retainer A 2 are assembled so that the column portion 9 is disposed between the outer ring 1 and the inner ring 3.

第１保持器Ａ1 と第２保持器Ａ2 の柱部９間には、内輪３のカム面７と対応する位置にポケット１０が形成され、各ポケット１０内に一対のローラ１１ａ、１１ｂと、その一対のローラ１１ａ、１１ｂを離反する方向に押圧する弾性部材１２とが組込まれている。 A pocket 10 is formed at a position corresponding to the cam surface 7 of the inner ring 3 between the pillar portions 9 of the first cage A 1 and the second cage A 2 , and a pair of rollers 11a, 11b and The elastic member 12 that presses the pair of rollers 11a and 11b away from each other is incorporated.

第１保持器Ａ1 と第２保持器Ａ2 は、図１に示す移動手段１３によって軸方向に移動される。 The first cage A 1 and the second cage A 2 are moved in the axial direction by the moving means 13 shown in FIG.

移動手段１３は、第１保持器Ａ1 および第２保持器Ａ2 の環状板８と軸方向で対向するロータ１４と、そのロータ１４と軸方向で対向する電磁石１５とから成る。電磁石１５はフィールドコア１５ａに電磁コイル１５ｂを巻付けた構成とされ、その電磁コイル１５ｂに対する通電により、第１保持器Ａ1 および第２保持器Ａ2 の環状板８に磁気吸引力を付与して、第１保持器Ａ1 と第２保持器Ａ2 をその環状板８がロータ１４に吸着される位置まで移動させるようにしている。 The moving means 13 includes a rotor 14 that faces the annular plate 8 of the first cage A 1 and the second cage A 2 in the axial direction, and an electromagnet 15 that faces the rotor 14 in the axial direction. Electromagnet 15 is configured to wound the electromagnetic coil 15b to the field core 15a, the power supply to the electromagnetic coil 15b, a magnetic attraction force is applied to the first retainer A 1 and the second retainer A 2 of the annular plate 8 Thus, the first cage A 1 and the second cage A 2 are moved to a position where the annular plate 8 is attracted to the rotor 14.

ここで、電磁石１５のフィールドコア１５ａは静止部材１６に支持され、フィールドコア１５ａの内側に設けられた軸受１７によってロータ１４が回転自在に支持されている。   Here, the field core 15a of the electromagnet 15 is supported by the stationary member 16, and the rotor 14 is rotatably supported by a bearing 17 provided inside the field core 15a.

図１および図４に示すように、第１保持器Ａ1 の柱部９および第２保持器Ａ2 の柱部９には周方向に傾斜する細長いガイド孔１８ａ、１８ｂが形成されている。一方、内輪３に形成された円筒部５には上記ガイド孔１８ａ、１８ｂのそれぞれに対応して周方向に長いスイッチ孔１９が設けられ、各スイッチ孔１９とそれに対応するガイド孔１８ａ、１８ｂの交差部にスイッチピン２０が挿入されている。スイッチピン２０のそれぞれは円筒部５内に組込まれたピンホルダ２１に固定されている。 As shown in FIG. 1 and FIG. 4, elongated guide holes 18 a and 18 b that are inclined in the circumferential direction are formed in the pillar portion 9 of the first cage A 1 and the pillar portion 9 of the second cage A 2 . On the other hand, the cylindrical portion 5 formed in the inner ring 3 is provided with a long switch hole 19 in the circumferential direction corresponding to each of the guide holes 18a and 18b, and each of the switch holes 19 and the corresponding guide holes 18a and 18b. A switch pin 20 is inserted at the intersection. Each of the switch pins 20 is fixed to a pin holder 21 incorporated in the cylindrical portion 5.

図３に示すように、スイッチピン２０とスイッチ孔１９の両端面間には回転方向すきまαが設けられ、その回転方向すきまαの範囲内において、内輪３とピンホルダ２１が相対的に回転し得るようになっている。   As shown in FIG. 3, a rotational direction clearance α is provided between both end faces of the switch pin 20 and the switch hole 19, and the inner ring 3 and the pin holder 21 can relatively rotate within the range of the rotational direction clearance α. It is like that.

ここで、第１保持器Ａ1 に設けられたガイド孔１８ａと第２保持器Ａ2 に設けられたガイド孔１８ｂは相反する方向に傾斜し、第１保持器Ａ1 および第２保持器Ａ2 がロータ１４から離反する方向に移動した際に、スイッチピン２０に対する各ガイド孔１８ａ、１８ｂの接触によって第１保持器Ａ1 と第２保持器Ａ2 の柱部９間に形成されたポケット１０の周方向の幅寸法が大きくなる方向に第１保持器Ａ1 と第２保持器Ａ2 とが同じ角度だけ相対回転するようになっている。 Here, a guide hole 18a provided in the first retainer A 1 and the second retainer A 2 guide hole 18b provided in the inclined in opposite directions, the first retainer A 1 and the second retainer A when 2 is moved in a direction away from the rotor 14, the guide holes 18a, 18b first retainer a 1 and the second retainer a 2 of pockets formed between the pillar portion 9 by contact to the switch pin 20 The first cage A 1 and the second cage A 2 rotate relative to each other by the same angle in the direction in which the circumferential width dimension of 10 increases.

図７は、ポケット１０の幅寸法が最大となった状態を示し、その状態において、弾性部材１２の押圧により互に離反する方向に移動した一対のローラ１１ａ、１１ｂと円筒形内面６間には微小間隙δが形成される。この微小間隙δがなくなるまで内輪３と第１保持器Ａ1 および第２保持器Ａ2 が相対回転したときの回転角は、スイッチピン２０とスイッチ孔１９の両端面間に形成された回転方向すきまαより少し小さくされている。 FIG. 7 shows a state in which the width dimension of the pocket 10 is maximized, and in this state, between the pair of rollers 11a and 11b and the cylindrical inner surface 6 moved in directions away from each other by pressing of the elastic member 12. A minute gap δ is formed. The rotation angle when the inner ring 3 and the first cage A 1 and the second cage A 2 rotate relative to each other until the minute gap δ is eliminated is the rotational direction formed between both end faces of the switch pin 20 and the switch hole 19. It is slightly smaller than the clearance α.

第１の実施形態で示す動力伝達装置は上記の構造から成り、いま例えば、電磁石１５の電磁コイル１５ｂに通電すると、第１保持器Ａ1 および第２保持器Ａ2 の環状板８に磁気吸引力が作用し、第１保持器Ａ1 および第２保持器Ａ2 はロータ１４に向けて移動して、図１に示すように、ロータ１４に吸着される。 Power transmission device described in the first embodiment consists structure described above, now for example, when energizing the electromagnetic coil 15b of the electromagnet 15, the magnetic attraction to the first retainer A 1 and the second retainer A 2 of the annular plate 8 The force acts, and the first cage A 1 and the second cage A 2 move toward the rotor 14 and are attracted to the rotor 14 as shown in FIG.

際１保持器Ａ1 および第２保持器Ａ2 がロータ１４に向けて移動するとき、各保持器Ａ1 、Ａ2 の柱部９に設けた傾斜状のガイド孔１８ａ、１８ｂはスイッチピン２０により案内され、そのスイッチピン２０と傾斜状ガイド孔１８ａ、１８ｂの接触により第１保持器Ａ1 と第２保持器Ａ2 は柱部９間に形成されたポケット１０の幅寸法が小さくなる方向に相対回転し、その相対回転によって一対のローラ１１ａ、１１ｂは弾性部材１２の弾性に抗して互に接近する方向に移動し、図２に示すように、円筒形内面６およびカム面７に対して係合解除された中立位置に保持される。 When the first retainer A 1 and the second retainer A 2 move toward the rotor 14, the inclined guide holes 18 a and 18 b provided in the column portions 9 of the retainers A 1 and A 2 are switch pins 20. The first retainer A 1 and the second retainer A 2 are guided in the direction in which the width dimension of the pocket 10 formed between the pillar portions 9 is reduced by the contact between the switch pin 20 and the inclined guide holes 18a and 18b. The pair of rollers 11a and 11b move in a direction approaching each other against the elasticity of the elastic member 12, and the cylindrical inner surface 6 and the cam surface 7 are moved to each other as shown in FIG. On the other hand, the neutral position is released from the disengaged state.

このため、内輪３が回転しても、その回転は外輪１に伝達されず、内輪３はフリー回転する。   For this reason, even if the inner ring 3 rotates, the rotation is not transmitted to the outer ring 1 and the inner ring 3 rotates freely.

電磁石１５の電磁コイル１５ｂに対する通電を遮断すると、一対のローラ１１ａ、１１ｂ間に組込まれた弾性部材１２の押圧によって一対のローラ１１ａ、１１ｂは離反する方向に移動する。   When the energization of the electromagnet 15 to the electromagnetic coil 15b is cut off, the pair of rollers 11a and 11b move away from each other by the pressing of the elastic member 12 incorporated between the pair of rollers 11a and 11b.

このとき、一対のローラ１１ａ、１１ｂは各保持器Ａ1 、Ａ2 の柱部９を押圧するため、第１保持器Ａ1 と第２保持器Ａ2 は柱部９間に形成されたポケット１０の周方向の幅寸法が大きくなる方向に相対回転する。 At this time, since the pair of rollers 11a and 11b press the pillar portions 9 of the retainers A 1 and A 2 , the first retainer A 1 and the second retainer A 2 are pockets formed between the pillar portions 9. Relative rotation in the direction in which the circumferential width dimension of 10 increases.

また、第１保持器Ａ1 と第２保持器Ａ2 の相対回転時、スイッチピン２０に対する傾斜状ガイド孔１８ａ、１８ｂの接触によって第１保持器Ａ1 と第２保持器Ａ2 とはロータ１４から離反する方向に移動する。 Moreover, during the relative rotation of the first retainer A 1 and the second retainer A 2, inclined guide holes 18a, the first retainer A 1 and the second retainer A 2 rotor and by contact 18b to the switch pin 20 Move away from 14.

第１保持器Ａ1 および第２保持器Ａ2 の柱部９の端面が外輪１の閉塞端に当接すると、第１保持器Ａ1 および第２保持器Ａ2 は停止し、一対のローラ１１ａ、１１ｂは図７に示すように、円筒形内面６との間に微小間隙δが形成される状態とされる。 When the end surfaces of the column portions 9 of the first cage A 1 and the second cage A 2 come into contact with the closed end of the outer ring 1, the first cage A 1 and the second cage A 2 stop, and a pair of rollers As shown in FIG. 7, 11 a and 11 b are in a state in which a minute gap δ is formed between the cylindrical inner surface 6.

このとき、スイッチピン２０は図８に示すように、スイッチ孔１９の両端面間の中央に位置する状態にあり、スイッチピン２０とスイッチ孔１９の両端面間に回転方向すきまαが形成されている。   At this time, as shown in FIG. 8, the switch pin 20 is located in the center between both end faces of the switch hole 19, and a rotational clearance α is formed between both end faces of the switch pin 20 and the switch hole 19. Yes.

そこで、内輪３の入力軸４を図８の矢印方向に回転させると、その入力軸４が上記回転方向すきまαにほぼ対応する角度分回転したとき、図１０に示すように、ポケット１０内に組込まれた一対のローラ１１ａ、１１ｂのうち回転方向後行側のローラ１１ｂが円筒形内面６およびカム面７に係合し、内輪３の回転は上記ローラ１１ｂを介して外輪１に伝達される。   Accordingly, when the input shaft 4 of the inner ring 3 is rotated in the direction of the arrow in FIG. 8, when the input shaft 4 is rotated by an angle substantially corresponding to the rotational direction clearance α, as shown in FIG. Of the pair of rollers 11a and 11b incorporated, the roller 11b on the downstream side in the rotation direction engages with the cylindrical inner surface 6 and the cam surface 7, and the rotation of the inner ring 3 is transmitted to the outer ring 1 through the roller 11b. .

図９は外輪１への動力伝達状態におけるスイッチピン２０とスイッチ孔１９の位置関係を示し、スイッチピン２０はスイッチ孔１９の一端面に近接する位置に保持され、そのスイッチ孔１９の他端面とスイッチピン２０との間には２倍の回転方向すき間２αが形成されている。   FIG. 9 shows the positional relationship between the switch pin 20 and the switch hole 19 in the state of power transmission to the outer ring 1. The switch pin 20 is held at a position close to one end face of the switch hole 19. A double rotation direction gap 2α is formed between the switch pin 20 and the switch pin 20.

内輪３の回転方向が図１０の矢印で示す方向と反対方向に切り換えられると、係合状態にあったローラ１１ｂが係合解除されると共に、内輪３がスイッチピン２０とスイッチ孔１９の端面間に形成された回転方向すきまαの２倍のすきま量にほぼ相当する角度分回転したとき他方のローラ１１ａが円筒形内面６およびカム面７に係合し、そのローラ１１ａを介して内輪３の回転が外輪１に伝達される。   When the rotation direction of the inner ring 3 is switched to the direction opposite to the direction indicated by the arrow in FIG. 10, the engaged roller 11 b is disengaged and the inner ring 3 is located between the switch pin 20 and the end face of the switch hole 19. The other roller 11a engages with the cylindrical inner surface 6 and the cam surface 7 and rotates the inner ring 3 via the roller 11a. The rotation is transmitted to the outer ring 1.

このように、内輪３の回転方向が切り換わると、スイッチピン２０とスイッチ孔１９間に形成された回転方向すきまαのほぼ２倍のすきま量に対応する角度分だけ内輪３が回転したときにローラが円筒形内面６およびカム面７に係合するため、切り換え時のスイッチ角がきわめて小さく、回転方向の切り換え時に係合ショックが発生するのを抑制することができる。   Thus, when the rotation direction of the inner ring 3 is switched, when the inner ring 3 is rotated by an angle corresponding to a clearance amount approximately twice the rotation direction clearance α formed between the switch pin 20 and the switch hole 19. Since the roller engages with the cylindrical inner surface 6 and the cam surface 7, the switch angle at the time of switching is extremely small, and the occurrence of an engagement shock at the time of switching the rotation direction can be suppressed.

第１の実施形態では、第１保持器Ａ1 および第２保持器Ａ2 の柱部９の端面を外輪１の閉塞端に当接させて、一対のローラ１１ａ、１１ｂと円筒形内面６との間に微小間隙δを確保するようにしたが、スイッチピン２０に対する傾斜状ガイド孔１８ａ、１８ｂの端面の当接により、第１保持器Ａ1 および第２保持器Ａ2 の軸方向の移動を制限して、上記微小間隙δを確保するようにしてもよい。 In the first embodiment, the end surfaces of the column portions 9 of the first cage A 1 and the second cage A 2 are brought into contact with the closed end of the outer ring 1 so that the pair of rollers 11a and 11b and the cylindrical inner surface 6 A minute gap δ is secured between the first retainer A 1 and the second retainer A 2 in the axial direction by the contact of the end faces of the inclined guide holes 18a, 18b with the switch pin 20. May be limited to secure the minute gap δ.

図１１および図１２には、この発明に係る動力伝達装置の第２の実施形態を示す。この第２の実施形態で示す動力伝達装置と先に述べた第１の実施形態で示す動力伝達装置とは、第１保持器Ａ1 の柱部９および第２保持器Ａ2 の柱部９のそれぞれに形成したガイド孔１８ａ、１８ｂの傾斜方向を逆向きとした点、および第２保持器Ａ2 の環状板８とロータ１４との間に弾性部材２２を組込んで第２保持器Ａ2 をロータ１４から離反する方向に押圧している点で相違している。 11 and 12 show a second embodiment of the power transmission device according to the present invention. The power transmission device shown in the second embodiment and the power transmission device shown in the first embodiment described above are the column 9 of the first cage A 1 and the column 9 of the second cage A 2. guide hole 18a formed in each of the point where the inclination direction of 18b opposite to, and a second retainer a incorporates elastic member 22 between the second retainer a 2 of the annular plate 8 and the rotor 14 2 is different in that it is pressed away from the rotor 14.

このため、第１実施形態で示す動力伝達装置と同一部品には同一の符号を付して説明を省略する。   For this reason, the same code | symbol is attached | subjected to the same components as the power transmission device shown in 1st Embodiment, and description is abbreviate | omitted.

第２の実施形態で示す動力伝達装置においては、電磁石１５の電磁コイル１５ｂに通電すると、スイッチピン２０に対する傾斜状ガイド孔１８ａ、１８ｂの接触により、第１保持器Ａ1 および第２保持器Ａ2 がロータ１４に吸着される方向に移動して、図１２に示すように、第１保持器Ａ1 および第２保持器Ａ2 のロータ側の端部に設けた突起８ａ、８ｂが外輪１の開口端に形成されたフランジ１ａに当接すると共に、ポケット１０の幅寸法が大きくなる方向に相対回転し、ポケット１０内に組込まれた一対のローラ１１ａ、１１ｂは図７に示す状態とされる。 In the power transmission device described in the second embodiment, when energizing the electromagnetic coil 15b of the electromagnet 15, inclined guide holes 18a, by contact 18b, the first retainer A 1 and the second retainer A to the switch pin 20 2 is moved in a direction to be attracted to the rotor 14, as shown in FIG. 12, the first retainer a 1 and the second retainer a 2 protrusions 8a provided on an end portion of the rotor side, 8b outer ring 1 The pair of rollers 11a and 11b incorporated in the pocket 10 are brought into a state shown in FIG. 7 while abutting against the flange 1a formed at the opening end of the pocket 10 and relatively rotating in the direction in which the width of the pocket 10 increases. .

また、電磁石１５の電磁コイル１５ｂに対する通電を遮断すると、弾性部材２２の押圧により、第１保持器Ａ1 と第２保持器Ａ2 はロータ１４から離れる方向に移動すると共に、ポケット１０の幅寸法が小さくなる方向に相対回転し、そのポケット１０内に組込まれた一対のローラ１１ａ、１１ｂは図２に示す中立状態とされる。 When the energization of the electromagnet 15 to the electromagnetic coil 15b is cut off, the first retainer A 1 and the second retainer A 2 move away from the rotor 14 due to the pressing of the elastic member 22, and the width dimension of the pocket 10 is increased. The pair of rollers 11a and 11b incorporated in the pocket 10 are set in a neutral state shown in FIG.

第２の実施形態においては、第１の実施形態と同様に、内輪３の回転方向の切り換わり時に係合ショックが発生するのを抑制することができる。   In the second embodiment, as in the first embodiment, it is possible to suppress the occurrence of an engagement shock when the rotation direction of the inner ring 3 is switched.

また、電磁石１５によって第１保持器Ａ1 と第２保持器Ａ2 とをロータ１４側に向けて移動させ、弾性部材２２によってロータ１４から離反する方向に移動させるようにしたので、動力伝達装置の動力の伝動と遮断の切換えを素速く、確実に行なわせることができる。 Further, since the first cage A 1 and the second cage A 2 are moved toward the rotor 14 by the electromagnet 15 and moved away from the rotor 14 by the elastic member 22, the power transmission device Switching between power transmission and shut-off can be performed quickly and reliably.

なお、第２の実施形態においても、第１の実施形態と同様に、スイッチピン２０に対する傾斜状ガイド孔１８ａ、１８ｂの端面の当接により、第１保持器Ａ1 、および第２保持器Ａ2 のロータ側への移動を制限して、一対のローラ１１ａ、１１ｂと円筒形内面６との間に微小間隙δを確保するようにしてもよい。 In the second embodiment, as in the first embodiment, the first retainer A 1 and the second retainer A are brought into contact with the switch pin 20 by the contact of the end surfaces of the inclined guide holes 18a and 18b. The movement of the two to the rotor side may be restricted so that a minute gap δ is secured between the pair of rollers 11 a and 11 b and the cylindrical inner surface 6.

図１３乃至図１６は、この発明に係る動力伝達装置の第３の実施形態を示す。この第３の実施形態では、内輪３の円筒部５とピンホルダ２１の相互間にスイッチばね２３を設け、そのスイッチばね２３によってスイッチピン２０をスイッチ孔１９の両端面間の中央に保持させるようにした点で第１の実施形態で示す動力伝達装置と相違している。   13 to 16 show a third embodiment of the power transmission device according to the present invention. In the third embodiment, a switch spring 23 is provided between the cylindrical portion 5 of the inner ring 3 and the pin holder 21 so that the switch pin 20 is held at the center between both end faces of the switch hole 19 by the switch spring 23. This is different from the power transmission device shown in the first embodiment.

すなわち、第３の実施形態では、ピンホルダ２１の端面にばね収納凹部２４を形成し、そのばね収納凹部２４内にＣ形のスイッチばね２３を組込み、そのスイッチばね２３の両端に設けられた一対の係合片２３ａをばね収納凹部２４の周壁に形成された切欠部２５から円筒部５の端面に形成された周方向に長い係合孔２６内に挿入して、切欠部２５および係合孔２６の周方向で対向する端面を相反する方向に押圧している。   That is, in the third embodiment, a spring housing recess 24 is formed on the end face of the pin holder 21, a C-shaped switch spring 23 is incorporated in the spring housing recess 24, and a pair of switches provided at both ends of the switch spring 23. The engaging piece 23 a is inserted into a circumferentially long engaging hole 26 formed on the end surface of the cylindrical portion 5 from the notched portion 25 formed on the peripheral wall of the spring housing recess 24, and the notched portion 25 and the engaging hole 26 are inserted. The opposite end faces in the circumferential direction are pressed in opposite directions.

他の構成は第１の実施形態で示す動力伝達装置と同一であるため、同一部品に同一符号を付して説明を省略する。   Since the other configuration is the same as that of the power transmission device shown in the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.

上記のように、ピンホルダ２１と円筒部５の相互間にスイッチばね２３を組込むことにより、ピンホルダ２１に対して内輪３が相対回転すると、スイッチばね２３が弾性変形し、その復元力によってスイッチピン２０がスイッチ孔１９の両端面間の中央に位置する状態に戻すことができる。   As described above, by incorporating the switch spring 23 between the pin holder 21 and the cylindrical portion 5, when the inner ring 3 rotates relative to the pin holder 21, the switch spring 23 is elastically deformed and the restoring force causes the switch pin 20. Can be returned to the state of being located at the center between both end faces of the switch hole 19.

このため、内輪３から外輪１への動力伝達の遮断後に内輪３を逆方向に少し回転させる必要がなくなり、動力伝達装置の動力の伝達と遮断の切換えをより素速く、確実に動作させることができる。   For this reason, it is not necessary to slightly rotate the inner ring 3 in the reverse direction after the power transmission from the inner ring 3 to the outer ring 1 is interrupted, and the power transmission and switching of the power transmission device can be operated more quickly and reliably. it can.

図１７は、この発明に係る動力伝達装置の第４の実施形態を示す。この実施形態では円筒部５とピンホルダ２１の相互間にスイッチばね２３を組込んでスイッチピン２０をスイッチ孔１９の両端面間の中央に保持するようにしている点で第２の実施形態で示す動力伝達装置と相違している。   FIG. 17 shows a fourth embodiment of the power transmission apparatus according to the present invention. In this embodiment, a switch spring 23 is incorporated between the cylindrical portion 5 and the pin holder 21 so that the switch pin 20 is held at the center between both end faces of the switch hole 19 as shown in the second embodiment. It is different from the power transmission device.

他の構成は第２の実施形態で示す動力伝達装置と同一であるため、同一部品には同一符号を付して説明を省略する。   Since the other configuration is the same as that of the power transmission device shown in the second embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.

なお、スイッチばね２３の組込みは第３の実施形態と同一であるため、同一符号を付して説明を省略する。   Note that since the switch spring 23 is incorporated in the same manner as in the third embodiment, the same reference numerals are given and description thereof is omitted.

第４の実施形態における動力伝達装置も第３の実施形態で示す動力伝達装置と同様にスイッチばね２３によってスイッチピン２０をスイッチ孔１９の両端面間の中央に保持することができるため、動力伝達装置の動力の伝達と遮断の切換えをより素速く、確実に動作させることができる。   Similarly to the power transmission device shown in the third embodiment, the power transmission device according to the fourth embodiment can hold the switch pin 20 at the center between both end faces of the switch hole 19 by the switch spring 23. It is possible to operate the device power transmission and shut-off more quickly and reliably.

この発明に係る動力伝達装置の第１の実施形態を示す縦断正面図。BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal front view showing a first embodiment of a power transmission device according to the present invention. 図１のII−II線に沿った断面図。Sectional drawing along the II-II line of FIG. 図１のIII −III 線に沿った断面図。Sectional drawing along the III-III line of FIG. 図１の一部切欠平面図。FIG. 2 is a partially cutaway plan view of FIG. 1. 図１に示す動力伝達装置の第１保持器と第２保持器とを示す分解斜視図。The disassembled perspective view which shows the 1st holder | retainer and 2nd holder | retainer of the power transmission device shown in FIG. 図１に示す動力伝達装置の第１保持器と第２保持器の吸着解除状態を示す断面図。Sectional drawing which shows the adsorption | suction cancellation | release state of the 1st holder | retainer and 2nd holder | retainer of the power transmission device shown in FIG. 図６の縦断側面図。FIG. 7 is a longitudinal side view of FIG. 6. 図１に示す動力伝達装置の保持器の吸着解除状態でのスイッチピンとスイッチ孔の関係を示す断面図。Sectional drawing which shows the relationship between a switch pin and a switch hole in the adsorption | suction cancellation | release state of the holder | retainer of the power transmission device shown in FIG. 図１に示す動力伝達装置の動力伝達状態でのスイッチピンとスイッチ孔の関係を示す断面図。Sectional drawing which shows the relationship between the switch pin and switch hole in the power transmission state of the power transmission device shown in FIG. 図１に示す動力伝達装置の動力伝達状態でのローラの係合状態を示す断面図。Sectional drawing which shows the engagement state of the roller in the power transmission state of the power transmission device shown in FIG. この発明に係る動力伝達装置の第２の実施形態を示す断面図。Sectional drawing which shows 2nd Embodiment of the power transmission device which concerns on this invention. 図１１に示す動力伝達装置の第１保持器と第２保持器の吸着状態を示す断面図。Sectional drawing which shows the adsorption | suction state of the 1st holder | retainer and 2nd holder | retainer of the power transmission device shown in FIG. この発明に係る動力伝達装置の第３の実施形態を示す断面図。Sectional drawing which shows 3rd Embodiment of the power transmission device which concerns on this invention. 図１３のXIV −XIV 線に沿った断面図。Sectional drawing along the XIV-XIV line | wire of FIG. 図１３に示す動力伝達装置の第１保持器と第２保持器の吸着解除状態を示す断面図。Sectional drawing which shows the adsorption | suction cancellation | release state of the 1st holder | retainer and 2nd holder | retainer of the power transmission device shown in FIG. 図１３に示す動力伝達装置の動力伝達状態でのスイッチばねの変形状態を示す断面図。Sectional drawing which shows the deformation | transformation state of a switch spring in the power transmission state of the power transmission device shown in FIG. この発明に係る動力伝達装置の第４の実施形態を示す断面図。Sectional drawing which shows 4th Embodiment of the power transmission device which concerns on this invention. 従来の２方向クラッチを示す断面図。Sectional drawing which shows the conventional two-way clutch. 図１８に示す２方向クラッチの係合状態を示す断面図。Sectional drawing which shows the engagement state of the two-way clutch shown in FIG.

符号の説明Explanation of symbols

１ 外輪
３ 内輪
５ 円筒部
６ 円筒形内面
７ カム面
Ａ1 第１保持器
Ａ2 第２保持器
８ 環状部
９ 柱部
１０ ポケット
１１ａ、１１ｂ ローラ
１２ 弾性部材
１３ 移動手段
１４ ロータ
１５ 電磁石
２２ 弾性部材
２３ スイッチばね
δ 微小間隙 DESCRIPTION OF SYMBOLS 1 Outer ring 3 Inner ring 5 Cylindrical part 6 Cylindrical inner surface 7 Cam surface A 1 1st holder A 2 2nd holder 8 Annular part 9 Column part 10 Pocket 11a, 11b Roller 12 Elastic member 13 Moving means 14 Rotor 15 Electromagnet 22 Elasticity Member 23 Switch spring δ Minute gap

Claims (5)

円筒形内面を有する外輪と、前記円筒形内面との間でくさび形空間を形成するカム面が外周に設けられた内輪と、環状部の片面に複数の柱部が周方向に等間隔に設けられ、その柱部が前記円筒形内面とカム面間に配置された第１保持器と、環状部の片面に複数の柱部が周方向に等間隔に設けられ、各柱部が第１保持器の柱部間に配置されて第１保持器の柱部との間で前記カム面と対応する位置にポケットを形成する第２保持器と、前記ポケット内に組込まれた一対のローラと、その一対のローラを相反する方向に押圧する弾性部材と、前記第１保持器と第２保持器とを軸方向に移動させる移動手段とを有し、前記第１保持器および第２保持器の柱部それぞれに周方向に傾斜すると共に、相反する方向に傾斜するガイド孔を形成し、前記内輪の端面に設けられた円筒部には各ガイド孔と対応する位置に周方向に長いスイッチ孔を形成し、そのスイッチ孔と各ガイド孔の交差部に挿入されたスイッチピンを前記円筒部内に組込まれたピンホルダに固定し、前記ガイド孔の一方の端面が前記スイッチピンに当接してポケットの周方向の幅寸法が最大とされた状態で一対のローラと円筒形内面間に微小間隙が形成されるようにした動力伝達装置。   An outer ring having a cylindrical inner surface, an inner ring provided with a cam surface forming a wedge-shaped space between the cylindrical inner surface, and a plurality of column parts provided at equal intervals in the circumferential direction on one side of the annular part A first retainer having a column portion disposed between the cylindrical inner surface and the cam surface, and a plurality of column portions provided on one side of the annular portion at equal intervals in the circumferential direction, each column portion being a first holding A second retainer that is disposed between the pillars of the container and forms a pocket at a position corresponding to the cam surface between the pillars of the first retainer; and a pair of rollers incorporated in the pocket; An elastic member that presses the pair of rollers in opposite directions; and a moving means that moves the first retainer and the second retainer in the axial direction, the first retainer and the second retainer A guide hole that is inclined in the circumferential direction and inclined in the opposite direction is formed in each column part, and the inner ring The cylindrical portion provided on the surface is formed with a long switch hole in the circumferential direction at a position corresponding to each guide hole, and a switch pin inserted at the intersection of the switch hole and each guide hole is incorporated in the cylindrical portion. A small gap is formed between the pair of rollers and the cylindrical inner surface in a state where one end face of the guide hole is in contact with the switch pin and the circumferential width of the pocket is maximized. Power transmission device. 前記移動手段が、保持器の環状板と軸方向で対向するロータと、そのロータと軸方向で対向し、通電によりロータに各保持器の環状板を吸着させる電磁石とから成る請求項１に記載の動力伝達装置。   The said moving means consists of a rotor facing the annular plate of the cage in the axial direction, and an electromagnet that faces the rotor in the axial direction and attracts the annular plate of each cage to the rotor by energization. Power transmission device. 前記第１保持器および第２保持器のそれぞれに形成したガイド孔を、各保持器の柱部が外輪と内輪間から抜け出る方向への移動時にスイッチピンとの接触によってポケットの周方向の幅寸法が小さくなる方向に第１保持器と第２保持器とが相対回転するよう傾斜させた請求項１又は２に記載の動力伝達装置。   When the guide holes formed in each of the first and second cages are moved in the direction in which the pillar portions of the cages are pulled out from between the outer ring and the inner ring, the width dimension in the circumferential direction of the pocket is increased by contact with the switch pin. The power transmission device according to claim 1 or 2, wherein the first retainer and the second retainer are inclined so as to relatively rotate in a decreasing direction. 前記第１保持器および第２保持器のそれぞれに形成したガイド孔を、各保持器の柱部が外輪と内輪間から抜け出る方向への移動時にスイッチピンとの接触によってポケットの幅寸法が大きくなる方向に第１保持器と第２保持器とが相対回転するよう傾斜させ、前記保持器を弾性部材によって柱部が外輪と内輪間に押し込まれる方向に付勢した請求項１又は２に記載の動力伝達装置。   A direction in which the width dimension of the pocket is increased by contact with the switch pin when the guide hole formed in each of the first cage and the second cage moves in a direction in which the pillar portion of each cage is pulled out from between the outer ring and the inner ring. The power according to claim 1 or 2, wherein the first cage and the second cage are inclined so as to rotate relative to each other, and the cage is urged by an elastic member in a direction in which the column portion is pushed between the outer ring and the inner ring. Transmission device. 前記内輪の円筒部とピンホルダの相互間に、スイッチピンがスイッチ孔の両端面間の中央部に配置される状態に保持するスイッチばねを設けた請求項１乃至４のいずれかに記載の動力伝達装置。   The power transmission according to any one of claims 1 to 4, wherein a switch spring is provided between the cylindrical portion of the inner ring and the pin holder to hold the switch pin in a state where it is disposed at the center portion between both end faces of the switch hole. apparatus.
JP2003397511A 2003-11-27 2003-11-27 Power transmitting device Pending JP2005155834A (en)

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